2017 IEEE Pulsed Power Conference

Session

Oral session 13 - High-Voltage Insulation and Dielectric Breakdown Phenomena, Explosively-Driven Pulsed Power - Session Chair : Yakov Krasik

13

21 Jun 2017, 10:00

181. CALCULATION OF BREAKDOWN VOLTAGE OF GAS GAPS WITH ARBITRARY GEOMETRY ON EXAMPLES OF SPHERES AND TOROIDS

Alexander Pokryvailo (Spellman High Voltage Electronics Corp.)

21/06/2017, 10:00

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

Breakdown voltage (BDV) is calculated for two electrode structures, namely sphere and donut gaps, operating in air at atmospheric pressure. The calculation is based on the streamer breakdown criterion. Comsol software is used for field analysis and calculation of critical number of electrons by assessing integrals of the efficient ionization coefficient along field lines. Thus, also lengths of...

10. Hybrid kinetic-liquid model of the nanosecond discharge initiated by runaway electrons

Vasily Kozhevnikov (Institute of High Current Electronics)

21/06/2017, 10:15

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

The direct solution of Boltzmann kinetic equation is of great interest for theoretical investigations of various gas discharges. Such approach is known to be the most fundamental because it gives comprehensive information about the discharge and its evolution by providing electron and ion distribution functions for any given time point. The complete numerical solution of Boltzmann equations...

89. PRELIMINARY EXPERIMENT ON SHOCK WAVES GENERATED BY UNDERWATER ELECTRICAL EXPLOSION OF WIRES

Liuxia Li (Tsinghua University)

21/06/2017, 10:30

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

It is well-known that underwater electrical wire explosion (UEWE) is accompanied by generation of strong shock waves (SSW) with fast front and short duration, which makes it attractive for various scientific and technological purposes. In this paper, a device for UEWE was developed and composed of pulse capacitors (200μF, 1~6kV), a spark gap switch, and a metal wire immersed in a chamber...

92. Space Plasma Generator for Controlled Enhancement of the Ionosphere

James Kim (Enig Associates, Inc.)

21/06/2017, 10:45

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

We are presenting an innovative space plasma generator, using explosive-driven flux compression generators to convert explosive chemical energy to electromagnetic energy. We will then use a Joule heating to heat up light metallic load in a sub millisecond time scale to transform the load from a solid metallic state to a first ionization plasma state going through multi-phase transitions to...

133. The research on the design method and pre-arcing characteristic of the pulsed discharge fuse

Mr Chaoliang Jin (Huazhong University of Science and Technology)

21/06/2017, 11:15

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

In the capacitive pulsed power supply, several or even hundreds of capacitors are in parallel to provide energy. If internal short circuit occurs in one of the capacitors, the others will inject a lot of energy into the fault one, which may cause a severe accident. By taking a shunt capacitor bank composed of ninety-six 33kJ-capacitors as the research object, a scheme which tries to protect...

142. Testing High Voltage (200kV) DC cable and feed-through designs in rep-rated modes*

Dr MICHAEL MAZARAKIS (SANDIA NATIONAL LABORATORIES)

21/06/2017, 11:30

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

Michael G. Mazarakis, Mark L. Kiefer, Joshua J. Leckbee,
Sandia National Laboratories
Albuquerque, NM 87185

Del H. Anderson, Frank L. Wilkins, Robert J. Obregon
National Security Technologies

We have constructed a Component Test Stand (CTS) to test various high voltage components to be utilized in near future pulsed-power devices. In addition to cable and oil feed-through design voltage...

173. Effects of Contamination Accumulation on The Surface Temperature Distribution of a Glass Insulator String

Mr Chibuike Ilomuanya

21/06/2017, 11:45

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

A study is carried out on a uniformly contaminated cap and pin insulator string consisting of 10 glass discs, using a Finite Element Analysis software. A CAD design of the insulator is such that a thin conductive water layer covers the entire glass region. This water layer represents acid rain. 150µS/cm conductivity is applied to the water layer to represent an approximate 5% concentration of...

360. Initial Experiments with the LANL “Ranchero-S” Flux Compression Generator

Dr Erik Haroz (Los Alamos National Laboratory)

21/06/2017, 12:00

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

Initial experiments have been conducted with a new model of the LANL Ranchero magnetic flux compression generator (FCG) that has been introduced as the Ranchero-S configuration. The design overcomes a weakness in the earlier versions related to possible flux pocketing near the output glide plane when currents become very high. In addition to employing an armature that is sculpted to match a...

137. Partial Discharge in High Voltage DC Cables

Mr Euan Morris (EPSRC Centre for Doctoral Training in Future Power Networks and Smart Grids)

21/06/2017, 12:15

Pulsed Power Physics and Technology, Components and HV Insulation

Oral

This paper is concerned with use of partial discharge monitoring to provide information about the condition of the insulation of electrical cables used for HVDC transmission systems. Electrical cables are among the most fundamental components of any electrical grid, from large subsea international interconnectors, to the ‘last mile’ providing consumers with their electrical supply. The size,...